Having started the thread, I want to make it clear I am not questioning the integrity of Scott Schuette, the photographer. It was an interesting picture, on which I was struggling a bit, and still am, to see the features by which it is Temminck's.
The features that struck me, were the split super, the breast band that seemed to be quite streaked, the white lower face, and the lack of an eye-ring. Obviously, I can see the black feathers on the brown-grey upperparts (mantle and lower scapulars), which certainly look like Temminck's - on Temminck's the lower row of scaps often have large pale areas near the base - which might just be visible. However, I still can't see the white eye-ring; the lower face on Temminck's is often well-steaked (the 'face' can seem a bit browner sometimes), but here it seems contrastingly white below the ear coverts.
I suspect that Scott is thinking it was an obvious Temminck's in the field....